| /* |
| * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * A simple benchmark module that can be loaded |
| * in order to time how many times a method executes |
| * in a fixed number of seconds |
| */ |
| |
| var benchmark = function(method, timeInMillis, args) { |
| var hz, |
| period, |
| startTime = new Date, |
| runs = 0; |
| do { |
| method.apply(args); |
| runs++; |
| totalTime = new Date - startTime; |
| } while (totalTime < timeInMillis); |
| |
| // convert ms to seconds |
| totalTime /= 1000; |
| |
| // period → how long per operation |
| period = totalTime / runs; |
| |
| // hz → the number of operations per second |
| hz = 1 / period; |
| |
| return hz; |
| }; |
| |